Chemistry QUIZ #1

This quizelt has everything the study guide has but the Periodic table groups

Isotopes

a different version of an element that has different number of neutrons , this changes the mass, but not the identify of the element.

Radioactive decay table

Alpha, Beta decay and Gamma

Alpha Decay

2P and 2N are ejected, Atomic #: -2, Atomic Mass: -4

Beta Decay

1N converted to a 1P and 1e-, proton remains in nucleus. Atomic Number +1, Atomic Mass unchanged.

Gamma

energy released no other changes.

Only atoms with ------------ will undergo radioactive decay.

unstable nucleus

Proton Mass and Neutron Mass

1 amu

Electron Mass =

1/1,836 amu

AMU =

Atomic Mass Unit

Where are a proton, neutron and electron are in an atom

99% of an atom are in a nucleus

Atomic Number =

# of Protons

Atomic Mass =

# of Proton + # of Neutron

What are the types of atomic forces

Strong Nuclear force, Electromagnetic, Momentum

Strong Nuclear force

Keeps nucleus together that over comes the repelling the force of like charges

Electromagnetic

keeps electron from flying away from nucleus

Momentum

prevents electron form slamming into nucleus.

What happened when we heated the salts using a flame fueled by ethanol

The atoms when to an excited stated and emitted color

How to find the protons?

Atomic number

How to find the neutron

Atomic number - Atomic Mass

How to find the Electrons

Electrons are the same as Protons if the atom has no nuclear charge.